.NavigationItems{
    margin: 0;
    padding:0;
    list-style:none;
    display:flex;
    flex-flow:column;
    align-items:center;
    height: 100%;
}

@media (min-width:500px){
    .NavigationItems{
        margin: 0;
        padding:0;
        list-style:none;
        display:flex;
        flex-flow:row;
        align-items:center;
        height: 100%;
    }
}
